Eaton MD93E70X Drive isolation transformer - UL Listed
Part Number: MD93E70X
Quick Summary
Eaton MD93E70X drive isolation transformer provides reliable isolation for motor drives in industrial automation applications. Plant operators often contend with voltage transients and drive instability that cause downtime and accelerated equipment wear. This model is UL Listed, and Eaton provides documentation to support regional approvals such as CE where required. With a 93 kVA rating, three-phase operation, and a dry-type design, it delivers efficient, compliant power for control systems while minimizing maintenance and lifecycle costs.
Product Information
Extended Description
MD93E70X Eaton: Drive Isolation Transformer, Ventilated, Dry Type Distribution, DT-3, Three-phase, PV: 480 delta, Taps: 1 at +5% FCAN, 1 at -5% FCBN, SV: 380Y/220, 150°C, 93 kVA, Al windings, Frame: 916A, uses WS19
Product Name
Eaton Motor drive isolation ventilated transformer
Catalog Number
MD93E70X
UPC
786680051630
Product Length/Depth
23.42 in
Product Height
48.56 in
Product Width
28.22 in
Product Weight
763 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
UL Listed
Coil material
Aluminum
Design
DT-3
Frame
916A
Tap size
1 at +5% FCAN, 1 at -5% FCBN
Type
Dry Type Distribution, Drive Isolation Transformer
Frequency rating
50-60 Hz
Phase
Three-phase
Primary voltage
480 V
Secondary Voltage
380Y/220 V
Temperature rise
150 °C rise
Volt ampere rating
93 kVA
Weathershield
WS19
Dry-type DT-3 design with aluminum windings is a key feature. This delivers improved insulation, safer operation, and straightforward cooling, reducing maintenance complexity. The transformer is well-suited for motor drives in control panels and distributed power setups in manufacturing plants. The 93 kVA rating supports 480 V to 380Y/220 V three-phase loads, with taps at +5% FCAN and -5% FCBN to maintain voltage regulation under load changes. This capability reduces drive tripping and equipment wear, enabling smoother production lines in food & beverage, packaging, and process industries. Ventilated enclosure with WS19 weather shield and frame 916A provide durable protection in harsh environments, while aluminum windings promote lightweight handling and long-term reliability. UL Listed certification enhances procurement confidence, and Eaton’s warranty terms reduce total cost of ownership. Overall footprint and weight—23.42 in L, 28.22 in W, 48.56 in H, 763 lb—support space planning in compact switchgear rooms.
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FAQs
Follow Eaton’s installation guidelines: mount in a ventilated enclosure, connect the primary to 480 V delta, and wire the secondary to 380Y/220 V three-phase loads. Use the DT-3 design with WS19 protection, ensure proper clearance for cooling, and set taps to +5% FCAN or -5% FCBN only if your supply voltage deviates beyond tolerance. Confirm panel labeling and conductor sizing meet the 93 kVA rating and lifecycle expectations.
Key specs include a 93 kVA rating, primary 480 V, secondary 380Y/220 V, 50–60 Hz operation, three-phase configuration, and taps at +5% FCAN and -5% FCBN for voltage regulation. Aluminum windings and a DT-3 dry-type design support safe, efficient operation. The WS19 weather shield and 916A frame address rugged industrial environments, while the 150 °C rise indicates thermal performance under load.
Yes. The MD93E70X is designed as a drive isolation transformer to decouple motor drives from supply transients, improving VFD protection, reducing nuisance tripping, and extending drive life. Its three-phase, 480 V to 380Y/220 V configuration aligns with common VFD input/output requirements, and the ventilated, vented construction supports stable operation in industrial plants.
The MD93E70X carries UL Listed certification, indicating compliance with safety standards for electrical equipment in North America. Regional requirements such as CE may apply depending on the market, and Eaton provides documentation to support these approvals. Always verify local regulatory needs during procurement and commissioning.
Eaton offers a one-year warranty from installation or 18 months from shipment, whichever occurs first. Routine maintenance involves standard transformer care: inspect enclosures, verify connections, monitor insulation and cooling, and confirm tap settings remain within tolerance. This supports predictable maintenance budgeting and helps maximize uptime and return on investment.